Headline: Democrats take on the Koch brothersLink: http://www.cnn.com/2014/05/16/politics/who-are-the-koch-brothers/Publication Date: Monday, May 19, 2014Primary Source: CNN.comNon-Cato Author: Dana BashType: op-edFormat: Web Only OutletNature of Mention: mentionedScholar: CatoResearch Area: Government and PoliticsPolitical PhilosophySubjects: the Koch brothers